Many items are already packaged to protect them from damage in transit. If it's already in a box with Styrofoam inserts, there isn't as much value on wrapping it again.
That said, there are countless items at Amazon that are not protected like that. Amazon also won't pay their employees enough to care, nor give them the time to make any such decisions.
Music and right-wing politics are weird. I can't even begin to count how many bands were proudly anti-war in the 70s. Then there's the punk movement, which was highly critical of Reagan and Bush.
I guess music and a message of hope/protest works better than a message of oppression, especially when appealing to youth.